Ivoclar Vivadent SR Nexco Paste - Manual (Page 31)

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caStInG and fInISHInG
after having cast the framework (e.g. with academy Gold XH), carefully divest, sandblast/pickle and fit it on the model.
after separating, the metal framework is finished using tungsten carbide burs. If softer alloys are used, it is recommended
to work with limited pressure. a correct marginal design is paramount to attaining a reliable metal-composite bond. If
possible, create a tapered chamfer or wraparound design in the cervical area.
you are recommended to polish those parts of the restoration which are not veneered with Sr nexco (e.g. palatal or
lingual areas, metal scallops, etc.) before you start the veneering work or before the framework is conditioned. If this is
done after veneering, the quality may be compromised.
Carefully divest, blast and pickle the framework on the model.
Create the cervical margin as a tapered chamfer using a tungsten carbide bur.
Practical Procedure
– Fixed, Metal-Supported Restorations